SULZER Industrial Custom Submersible Centrifugal Pump Wear Plate

Our brand was created to deliver complete fluid machinery solutions under one accountable supplier — covering equipment supply, spare parts, and technical services. The product line includes pumps, frequency converters, servo drives, PLC-HMI automation controllers, industrial control cabinets, motors, gear reducers, mechanical seals and assemblies, couplings, and gearboxes. Field engineering services comprise overseas FARO 3D scanning for reverse molding, laser alignment, and on-site commissioning and debugging by our dispatched engineers.

SULZER Wear Ring (also called casing wear ring or impeller wear ring) is a replaceable annular component fitted at the impeller inlet and casing bore interface. Its primary function is to create a controlled, close-running clearance between the rotating impeller and the stationary casing, minimizing internal recirculation (slip flow) from the high-pressure discharge side back to the low-pressure suction side of the impeller.

Wear rings are designed to be the sacrificial component in the impeller-casing clearance gap. As the pump operates over time, abrasive particles in the fluid, erosion, and occasional contact during transient events (cavitation, vibration, misalignment) gradually enlarge the clearance. Increased clearance degrades pump efficiency — a 0.5 mm increase in wear ring clearance can reduce pump efficiency by 3–5%. Replacing the wear rings restores the original internal clearance and recovers the lost hydraulic performance without replacing the entire casing or impeller.

Our FLOWSERVE wear rings are machined from certified bar stock or cast blanks to match the original ring profile, bore, and fit type (radial or axial lock). Available in a range of materials matched to service conditions.

• Material Verification — Chemical composition and hardness per applicable ASTM, DIN, EN standard
• OD & ID Dimensional Check — Bore, outer diameter, thickness, and groove dimensions verified against drawing within ±0.05 mm
• Concentricity & Runout — TIR checked between bore and OD to ensure uniform radial clearance after installation
• Surface Finish — Measured on the running surface (Ra 1.6–3.2 μm typical)
• Fit Type Verification — Interference fit (shrink or press) vs. clearance fit confirmed to pump drawing
• Hardness Test — Brinell or Rockwell per material grade

Certifications: ISO9001:2015, ISO14001:2004, API Specification Q1.

1. Submit Details — Pump model, wear ring part number, or dimensions (OD × ID × thickness + fit type)
2. Review — Our team confirms material, dimensions, and fit against the pump specification within 24 hours
3. Quotation — Formal quote with material, quantity pricing, and lead time
4. Production — Manufacturing upon deposit; full dimensional check on each ring
5. Dispatch — Shipment after balance payment with inspection report

• Anti-Rust Coating — Rust-preventive oil applied to all machined surfaces
• Individual Wrap — Each ring wrapped in VCI paper + foam
• Carton Packing — Small quantities in corrugated carton with foam dividers; bulk orders in wooden crate

Lead Time: 20–30 days after deposit. Special materials (Duplex SS, Ni-Hard): 35–45 days.

Shipping: Express, Sea freight, Air cargo.

Payment: 70% T/T deposit, balance against copy of B/L.